4WRTE25Q2-350P-4X/6EG24K31/A5M

The 4WRTE25Q2-350P-4X/6EG24K31/A5M valve belongs to the 4WRTE Directional Control Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation. It accepts a ±10 V command or feedback signal, enabling proportional positioning of the spool from an external controller. A nominal supply of 24 V DC energizes the electronics, while maximum current draw of 1.6 A and total power consumption of 72 VA determine the size of the power supply in the cabinet. The enable function is routed to pin C so the machine control system can quickly disable the valve when required. Electrical connection is made through a DIN EN 175201-804 (K31) plug, providing a standardized interface for quick service. Upstream wiring must include a 4 A time-lag fuse to prevent damage in case of overloads. The coil is designed to operate safely up to 150 °C, extending service life in high ambient temperatures. An enclosure rating of IP65 protects internal parts from dust ingress and water jets. The unit weighs 16.8 kg, which needs to be considered when selecting mounting brackets and manifold supports.

During operation the valve delivers a rated flow of 350 l/min at a 5 bar differential, giving predictable actuator speed in medium-size circuits. It can accommodate a recommended maximum flow of 870 l/min for short periods when larger volumes are demanded. Channels p, A, and B withstand operating pressures up to 350 bar, making the device suitable for high-pressure systems such as presses and die-casting machines. Spool movement is assisted by a pilot oil flow of 20 l/min when supply pressure is 315 bar, and a pilot chamber volume of 6.8 cm³ must be filled to shift from zero to full stroke. The porting pattern follows ISO 4401-08-08-0-05, which allows direct mounting on compatible subplates without additional adapters. These hydraulic capabilities complement the electrical features already noted and define the valve’s role as a precise, high-capacity directional element in complex automation loops.